Oil burning camp stove



Feb. 5, 1957 J. BEAUDOIN 2,780,216

OIL BURNING CAMP STOVE Filed July 26, 1954 I INVENTOR. FIgO JACK BEAUDO/N United States Patent OIL BURNING CAMP STOVE Jack Beaudoin,Gulliver, Mich.

Application July 26, 1954, Serial No. 445,840

3 Claims. (Cl. 126-93) My invention relates to improvements in heatingapparatus and particularly to liquid fuel burning stoves for heatingcamps, tents, and other structures.

Various field operations and out-of-door sports require a relativelysmall, reliable and easily ignitable stove or space heater operating onreadily available liquid fuel such as oil or kerosene. Such a stove mustbe easy to clean and maintain and must produce a high heat with aminimum of fuel. At the same time it must be of rugged, yet economicalconstruction.

My invention fulfills all of the foregoing requirements. One of thefeatures of my invention permits the construction of a stove stripped ofmany conventional controls and assemblies which I have found no longernecessary to safe and efficient operation. A further feature is asingle, easily removed and cleaned burner-fuel line assembly as the onlypart of the stove which requires cleaning. Another feature is a moreeflicient, yet simply constructed fuel burner.

The foregoing and other features of my invention will now be describedin detail, reference being had to the accompanying drawings in which:

Fig. 1 is an isometric view, partially broken away,

showing a preferred embodiment of my invention;

Fig. 2 is a detailed partial cross-sectional view of the burner-fuelline assembly and the lower portion of the stove shown in Fig. 1; and

Fig. 3 is a side view of a lighter stick for igniting fuel in the burnerof the stove.

My invention is capable of many modifications and embodiments. There isshown in the drawings and will generated by the stove. Fuel tank 22 maybe aflixed to support 21 by a single bolt 23 for convenient removal. Thefilling spout of the tank is covered by a cap 25 and the liquid fuel isfed from the tank to a fuel line in regulatable quantities by means of acontrol valve 26 mounted on the lower portion of tank 22.

Referring now to both Figs. 1 and 2, the burner hereinafter described ispositioned within housing 10 by a flanged annular, disc-like support 28mounted horizontally within the lower portion of the housing. Support 28has a concentric hole in its center for accommodating the burner. Toproperly control the fiow of air for combustion to the burner there ismounted within housing 10 and beneath support 28a circular disc-like aircontrol plate 29 provided with a concentric burner hole 29a and aplurality of air holes 2% equally spaced around the now be fullydescribed a preferred embodiment which it should be understood isillustrative of the principles of my invention without limiting theinvention to this embodiment. The scope of the invention will be setforth only in the appended claims.

Referring first to Fig. 1, there is shown a stove with an upstandingsubstantially cylindrical housing 10 made of sheet metal or the likewith the central axis of the housing substantially vertical. The housingis provided with a circular top 11 and a flue 12. The flue may have aregulatable damper as of the butterfly type shown. A plurality of legs14 are aflixed to the bottom of housing 10 and serve to support theentire stove and to permit free circulation of air beneath the stovehousing. Preferably the lower portion of the legs contain holes tofacilitate rigid mounting of the stove onto a floor or other supportingsurface.

A generally rectangular hole in the side of housing 10 is closed by acover plate 16 which is mounted over the hole with a plurality ofself-tapping screws 17. This hole in housing 10 with its easilyremovable cover plate 16 facilitates simple removal of the burner-fuelline assembly in a manner to be described. A lighter hole is provided incover plate 16 and the hole can be closed by a pivotable lighter holecover or door 18 mounted on plate 16 by a rivet 19. A small flange 18amay be 10- central burner hole.

An integral burner-fuel line assembly 30 comprises a burner 32, a fuelline 33, and a fuel line nut 34. Burner 32 is preferably pie plateshaped with a flanged upper lip 32a which in its assembled positionwithin the stove rests on the upper surface of support 28. The truncatedconical side portion 32b of the burner makes an included obtuse angle ofsubstantially with the flat horizontal bottom of the burner. The sideportion of the burner contains a plurality of holes 320 formedpreferably in three rows with the bottom row spaced somewhat above thebottom of the burner. burner is adapted to contain a quantity of liquidfuel.

Fuel line 33 is joined to control valve 26, which is threaded, by meansof fuel line nut 34. The outlet end of the fuel line terminatesconcentrically within burner 32 with the upper end of the fuel linelying slightly above the bottom of the burner, but below the lowermostrow of holes 32c as shown in Fig. 2. The fuel line is rigidly aflixed tothe burner to form an integral assembly.

In Fig. 3 there is shown a lighter stick 36 for conveniently ignitingthe fuel in the burner. Lighter stick 36 is preferably made of heavygauge wire to one end of which is fastened a wad 37 made of a porous,non-combustible material such as shredded asbestos.

To operate my camp stove, fuel tank 22 is first filled with liquid fueland control valve 26 is opened to permit fuel to flow through fuel line33 into the lower portion of burner 32. Lighter stick wad 37 issaturated with fuel, as by dipping the lighter stick into the fuel tankthrough its filling spout, and ignited. The door 18 is then opened andthe burning end of the lighter stick thrust into the fuel contained inburner 32. As soon as the fuel in the burner is ignited the lighterstick may be withdrawn and extinguished. Door 18 is then closed so asnot to interfere with proper airflow and combustion within the stove.

As soon as the fuel in burner 32 is ignited air will be drawn from theatmosphere beneath the housing, through the holes 29b in air controlplate 29 and up through the holes in the side of burner 32. Thus airwill be drawn up and over the burning fuel as shown by the broken arrowsin Fig. 2 to provide a full supply of oxygen for complete combustion ofthe fuel. The heat to be obtained from the stove can be simply governedby controlling the amount of fuel flowing through control valve 26 tothe burner. While for normal operation sufiicient fuel would be fed tokeep the entire bottom of the burner covered to below the level of theupper end of fuel line 33, it is possible by restricting fuel flow tomaintain only The lower portion of the fuel line itself.

No liquid fuel burning stove can operate without the production of acertain amount of free carbon, some of,

which tends to adhere to and foul up the stove and particularly theburner. For this reason the burner must from time to time be cleaned.Also, impurities in the liquid fuel sometimes make cleaning of the fuelline necessary. Since the burner and fuel line of my stove constitute anintegral assembly they can be removed for cleaning in a singleoperation.

This may be accomplished by first removing screws 17 and cover plate 16and unscrewing fuel line nut 34 from control valve 26. The burner-fuelline assembly 30 can then be easily lifted up from support 28 and takenout of the stove housing through the hole in the side of the housingnormally covered by plate 16. Upon their removal both the burner andfuel line can be cleaned readily and I have found this to be the onlycleaning necessary to keep my stove in proper operating condition. Uponreiusertion of assembly 30 into the stove housing, fastening the fuelline nut and reinstalling the cover plate, the stove is again ready foroperation.

I claim:

1. A liquid fuel burning stove comprising an upstanding housing, aplurality of spaced apart legs affixed to the lower end of said housingfor supporting said housing and for providing free air circulationbeneath said housing, an open-centered annular support permanentlymounted within the lower portion of said housing, a liquid fuel tankmounted on the side of said housing, a valve mounted on said fuel tankfor controlling the flow of liquid fuel from said tank, an integralburner assembly consisting of (l) a lipped burner with a bottom portionand a substantially truncated conical side portion having therein aplurality of air holes and (2) a single-piece fuel line removablyconnected to said fuel tank valve and running therefrom to the bottomportion of said burner, an air control plate having therein a pluralityof air holes and mounted over the lower end of said housing beneath saidannular support and said burner, said air control plate also havingtherein a central opening for said fuel line running from said fuel tankvalve to said burner within said housing, said central opening beingsufiiciently large to permit the unobstructed withdrawal therethrough ofthatportion of the fuel line lying outside of said housing, and a doorin said housing positioned above said burner and said annular support,the opening of said door being sufficiently large to permit the removaltherethrough of said integral burner assembly, said burner assemblybeing connected to said stove only by the lip of -2- said burner restingon said annular support thereby to facilitate the easy removal of saidburner assembly from said stove through said door opening, the air holesin said air control plate and in said burner constituting the only meansfor supplying air for the burning of liquid fuel within said burner.

2. A stove according to claim 1 wherein the bottom portion of saidburner is flat and the side portion of said burner makes an includedangle of substantially with the bottom portion of said burner.

3. A liquid fuel burning stove comprising a generally cylindricalhousing, an open-centered annular support mounted generally horizontallywithin the lower portion of said housing, a plurality of spaced apartlegs affixed to the lower end of said housing for supporting saidhousing and for providing free air circulation beneath said housing, aliquid fuel tank supported on the side of said housing, a manuallyoperable valve mounted on said fuel tank for controlling the flow ofliquid fuel therefrom, an integral burner assembly consisting of (l) alipped generally pie-plate shaped burner with a plurality of air holesin its sides positioned within the open center of said annular supportand (2) a single-piece fuel line removably connected to said fuel tankvalve and running therefrom to the bottom portion of said burner, an aircontrol plate with a plurality of air holes therein mounted generallyhorizontally beneath said burner and over the lower end of said housing,said air control plate also having a central opening therein for saidfuel line running from said fuel tank valve to said burner within saidhousing, said central opening being sufficiently large to permit theunobstructed withdrawal therethrough of that portion -of the fuel linelying outside of said housing, and a door in said housing positionedabove said burner and said annular support, the opening of said doorbeing sufficiently large to permit the removal therethrough of saidintegral burner assembly, said integral burner assembly being connectedto the other elements of said stove only by the lip of said burnerresting on the annular support within said housing to facilitate theeasy removal of said burner assembly from said stove through said dooropening.

References Cited in the file of this patent UNITED STATES PATENTS 42,059Witsil Mar. 22, 1864 1,927,434 Cole et al. Sept. 19, 1933 2,212,078Sabins Aug. 20, 1940 2,214,693 Grotenhuis Sept. 10, 1940 2,347,268Kessler Apr. 25, 1944

